Question

2.3. Answer question numbers (a) - (1) on the basis of vour understanding of the following paragraph
and the related studied concepts :
• Take some freshly prepared lime water in a test tube.
• Blow air through this lime water.
Pichkari
• Note how long it takes for the lime water to
turn milky
Rubber
Tube
• Use a syringe or pichkari to pass air through
tube
some fresh lime water taken in another test
Lime
Test tube
tube.
water
containing
lime water
(@) What change would you expect in figure 'a'
(a) (6)
and 'b'?
(a) Air being passed into lime water with a
(b) Why do you observe the change in 'b'?
pichkari/syringe
( (c) What is the source of this component?
(b) Air being exhaled into lime water
(1) State the significance of this activity.( PLEASE ANSWER FAST)​

Answer 1

Answer:

a) -1. no change in tube 'a' the lime water In tube 'b' will turn to milk

b). the change is due to formation of calcium carbonate

c). lime water when reacts with carbon dioxide forms calcium carbonate

d). this activity shows that we exhale carbon dioxide

Answer 2

air being exhaled into lime water